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HADOOP-8460. Document proper setting of HADOOP_PID_DIR and HADOOP_SECURE_DN_PID_DIR (bobby)

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1345304 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Robert Joseph Evans 2012-06-01 18:18:16 +00:00
parent f343419055
commit 800cfd5c1c
3 changed files with 11 additions and 0 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -222,6 +222,9 @@ Release 2.0.1-alpha - UNRELEASED
HADOOP-8452. DN logs backtrace when running under jsvc and /jmx is loaded
(Andy Isaacson via bobby)
HADOOP-8460. Document proper setting of HADOOP_PID_DIR and
HADOOP_SECURE_DN_PID_DIR (bobby)
Release 2.0.0-alpha - UNRELEASED
INCOMPATIBLE CHANGES

3
hadoop-common-project/hadoop-common/src/main/conf/hadoop-env.sh
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@ -67,6 +67,9 @@ export HADOOP_LOG_DIR=${HADOOP_LOG_DIR}/$USER
export HADOOP_SECURE_DN_LOG_DIR=${HADOOP_LOG_DIR}/${HADOOP_HDFS_USER}
# The directory where pid files are stored. /tmp by default.
# NOTE: this should be set to a directory that can only be written to by
# the user that will run the hadoop daemons. Otherwise there is the
# potential for a symlink attack.
export HADOOP_PID_DIR=${HADOOP_PID_DIR}
export HADOOP_SECURE_DN_PID_DIR=${HADOOP_PID_DIR}

5
hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/ClusterSetup.apt.vm
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@ -85,6 +85,11 @@ Hadoop MapReduce Next Generation - Cluster Setup
At the very least you should specify the <<<JAVA_HOME>>> so that it is
correctly defined on each remote node.
In most cases you should also specify <<<HADOOP_PID_DIR>>> and
<<<HADOOP_SECURE_DN_PID_DIR>>> to point to directories that can only be
written to by the users that are going to run the hadoop daemons.
Otherwise there is the potential for a symlink attack.
Administrators can configure individual daemons using the configuration
options shown below in the table: